Cellular and molecular mechanisms of IFN‐γ production induced by IL‐2 and IL‐12 in a human NK cell line

Cellular and molecular mechanisms of IFN‐γ production induced by IL‐2 and IL‐12 in a human NK cell line
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人 NK 细胞系中 IL-2 和 IL-12 诱导产生 IFN-γ 的细胞和分子机制

DOI:
10.1002/jlb.58.2.225
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发表时间:
1995
影响因子:
5.5
通讯作者:
H. Young
H. Young
中科院分区:
医学3区
文献类型:
--
作者:
Jianping Ye;John R. Ortaido;K. Conlon;R. Winkler;H. Young

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干扰素-γ (IFN-γ) 是一种重要的免疫调节蛋白,主要由 T 细胞和大颗粒淋巴细胞 (LGL) 响应不同的细胞外信号而产生。特别是,两种白介素 (EL) IL-2 和 IL-12 已被证明是 T 细胞和 LGL 中 IFN-γ 基因表达的有效诱导剂。尽管有报道称,一些 T 细胞系可响应 IL-2 和 IL-12 刺激而产生 IFN-γ,但目前尚无自然杀伤 (NK) 细胞系以类似方式做出反应的报道。在本报告中,我们提供的证据表明,源自人 NK 细胞的细胞系 NK3.3 对 IL-2 和 IL-12 均有反应,通过 IFN-γ 和粒细胞巨噬细胞集落刺激因子 (GM-CSF) 细胞质 mRNA 和蛋白质表达的增加来衡量。此外,当 EL-2 和 IL-12 一起使用时,可协同诱导 IFN-γ 和 GM-CSF,这种协同作用归因于 IFN-γ 和 GM-CSF mRNA 的积累和稳定性增加。为了研究基因诱导中涉及的信号通路,使用环孢菌素 A (CsA)、转化生长因子-β、放线菌酮、染料木黄酮和十字孢菌素 A 5 种抑制剂来分析 IL-2 和 IL-12 对 NK3.3 细胞的影响。结果表明,IL-2 诱导 IFN-γ 和 GM-CSF 细胞质 mRNA 需要激活蛋白激酶 C,而不是新的蛋白质合成。相比之下,IL-12 诱导 IFN-γ 细胞质 mRNA 似乎仅部分依赖于蛋白激酶 C 的激活。此外,转化生长因子-β 和金雀异黄酮(一种酪氨酸激酶抑制剂)都可以抑制 IL-2 和 IL-12 信号传导,但 CsA 通常不活跃。还观察到这些试剂对细胞因子基因表达的抑制与增殖的抑制无关。此外,IL-2而非IL-12诱导核因子NF-κB和API,并且这两种DNA结合蛋白复合物的核水平的调节与IFN-γ和GM-CSF基因表达相关。这些数据表明,IL-2和IL-12可能具有不同的信号通路,导致IFN-γ和GM-CSF基因表达的诱导,并且NK3.3细胞系可以作为剖析这些通路中涉及的生化和分子事件的新模型。 J.洛科克。生物。 58:225-233; 1995年。
Interferon‐γ (IFN‐γ) is an important immunoregulatory protein produced predominantly by T cells and large granular lymphocytes (LGL) in response to different extracellular signals. In particular, two interleukins (ELs), IL‐2 and IL‐12, have been shown to be potent inducers of IFN‐γ gene expression in both T cells and LGL. Although it has been reported that there are some T cell lines that produce IFN‐γ in response to IL‐2 and IL‐12 stimulation, there has as yet been no report of a natural killer (NK) cell line that responds in a similar manner. In this report we present evidence that the cell line NK3.3 derived from human NK cells, responds to both IL‐2 and IL‐12, as measured by increases in IFN‐γ and granulocyte‐macrophage colony‐stimulating factor (GM‐CSF) cytoplasmic mRNA and protein expression. In addition, when used together EL‐2 and IL‐12 synergized in the induction of IFN‐γ and GM‐CSF and this synergy was attributed to an increased accumulation and stability of the IFN‐γ and GM‐CSF mRNAs. To investigate the signaling pathways involved in the gene induction, five inhibitors, cyclosporin A (CsA), transforming growth factor‐β, cydoheximide, genistein, and staurosporine A, were used in analyzing the effects of IL‐2 and IL‐12 on NK3.3 cells. The results suggest that activation of protein kinase C, but not new protein synthesis, is required for IL‐2 induction of IFN‐γ and GM‐CSF cytoplasmic mRNA. In contrast, IL‐12 induction of IFN‐γ cytoplasmic mRNA appears to only partially depend on activation of protein kinase C. Furthermore, both transforming growth factor‐β and genistein, a tyrosine kinase inhibitor, could suppress IL‐2 and IL‐12 signaling but CsA was generally inactive. It also was observed that suppression of cytokine gene expression by these agents was independent of the inhibition of proliferation. In addition, IL‐2 but not IL‐12 induced nudear factors NF‐κB and API, and regulation of the nudear levels of these two DNA binding protein complexes is correlated with IFN‐γ and GM‐CSF gene expression. These data indicate that IL‐2 and IL‐12 may have distinct signaling pathways leading to the induction of IFN‐γ and GM‐CSF gene expression, and that the NK3.3 cell line may serve as a novel model for dissecting the biochemical and molecular events involved in these pathways. J. Leukoc. Biol. 58: 225–233; 1995.
DOI: --
发表时间: 1991
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Hayakawa,K;Salmeron,MA;Kornbluth,J;Bucana,C;Itoh,K
通讯作者: Itoh,K
DOI: 10.4049/jimmunol.148.1.92
发表时间: 1992-01
影响因子: 4.4
作者:
S. Chan;Michiko Kobayashi;D. Santoli;B. Perussia;G. Trinchieri
通讯作者: S. Chan;Michiko Kobayashi;D. Santoli;B. Perussia;G. Trinchieri
与 IFN-β 和 IL-2 诱导的人类自然杀伤细胞功能增强相关的基因表达变化。
DOI: --
发表时间: 1988
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Kornbluth,J;Hoover,RG
通讯作者: Hoover,RG
人类自然杀伤细胞克隆系的细胞表面表型。
DOI: --
发表时间: 1982
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Kornbluth,J;Flomenberg,N;Dupont,B
通讯作者: Dupont,B